Date: Tue, 17 Jan 2006 16:06:45 +0100
From: Philippe Elie <phil.el@wanadoo.fr>
To: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Cc: linux-kernel@vger.kernel.org, levon@movementarian.org,
       Al Viro <viro@ftp.linux.org.uk>
Subject: Re: make "struct d_cookie" dependable on CONFIG_PROFILING?
Message-ID: <20060117150645.GA775@zaniah>
References: <20060117122701.GA26491@dmt.cnet>
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On Tue, 17 Jan 2006 at 10:27 +0000, Marcelo Tosatti wrote:


> Is there any good reason for not making "struct dcookie_struct
> *d_cookie" dependable on CONFIG_PROFILING? 
> 
> Shrinks "struct dentry" from 128 bytes to 124 on x86, allowing
> 31 objects per slab instead of 30.
> 
> John Levon informed me that he had such selection in his
> original patches, but was asked but take it off (?).

iirc this was seen usefull by other tools than profiler but 
fs/Makefile contains:

obj-$(CONFIG_PROFILING)		+= dcookies.o

and nobody complained agaisnt it.

-- 
regards,
Philippe Elie

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